Friction draft-gear.



Vli. W. NEWELL.

i FHICHON DRAFT GEAR. AYPLlcATIoM man MAR.2z,1sis,

1,280,282. Patented @on 1, 191s.

mvYENTon EDWARD W. NEWELI., or PITTSBURGH, :PENNsYLvAN1A, Samtronmitm-.Wrme- HoUsE un :BRAKE COMPANY, or WILMEBDING, PENNSYLVANIA, AobmMmIoN DF :PENNSYLVAML Y EMOTION DRAF'ITGEAB,

Specicaton of Letters Patenti 4 Patented 00h. I, 191,8.

To all whom t may concern: 4

Be it lmown thet I, EDWARD W. NEWELL, e citizen. of the United Statee,residing at Pittsburgh, in the county of Alleghen and State ofPennsylvania, have invente new mail useful Improvements in FrictionDraft- G'eers, of which the following is a. specifi nation.

This invention relates to friction draft ggf-:ara and more particularlytoga. type employing laterally and iongitud-melly movable wedge blocksand draft springs for op posing the relative longitudinalV rrLoyenientof seid blocks.

With-this type of friction draft gear, it is necessary to maintain thewedge blocks in position when subjected to bulling and draft stressesomi to accomplish this purposea the principal object of my invention isto provideaJ draft gear yoke having frietion faces adapted to cooperatewith fric? tion aoes of the Wedge blocks.

In the eoeompwoying drawing.; Figure 1 ie e central longitudinalvertice-l sectlon of e, friction irait gear and ,yoke embodyin myinvention; Figx 2 e. oentrol lon `tudina iiorieoiitel section thereof;end i 3 a tremverse soetion of the yoke on t e line owe of lig. 'L

kfis shown in the drown the dmft'gear may comprise Wedge bl 1 havin in-@lined friction faces for engagin inclined friction feces on a member 2,me ined fric tion. eees for engaging similar faces on opposed plungerWedges 3 and 4, and wcording 'to my invention, the yoke 5 is providedwith an integral transverse Wal-l 6 heving inclined friction fecesadapted to engai'ge corresponding friction faees on the wedge blocks '1.

Interposed between the rear end wall of the yoke 5 'und the member 2 aren plurality of draft springs 7 and 8 and the draw-ba.r 9 engages afollower `plete 10 `which in 'turn enga. es the front end o' the centralplunger we ge 3.

VThe Wall 6 Ahes a, Central `openin 11 throu h which the front plungerwe ge y3 e'lten s and the rear plunger wedge lis provided with stems 12adapted to engage the rear 'end wall of the yoke 5.

In operation,` when` the draft gear is subectedto e bumg stre, thedraw-bar -9 ,orcos the follower 10 rearwardly and with Vanni laterally,iepleeing the `x'riemloer .2

seen' that-"the fr;

bleues.

it the frontl 'r1 wedge 'and 'the rear plunger? 4 'is prevented frommoving rearwardly enggernent of the Stems 12 the meer Well M15, thewedge blocks are moved rearwardly ggeisg fthe .resistentie of the`springe en It will now.be tint 'thi ment of the me maintained inosi'tion to d resistaime by t e tion feces 071i the Under fa drittstress-the ,-rkefis pulledforward by the ferasvvv-leefrv e) silice thefront plunger we-dige Sais, heldfigom r the wedge bleclrs l ithemovement "Y'drefii'll springs i' we@ :e

ber 2 forwardly.

Wall vassist liniholelmfg L posit'oii i Y so In addition t we* Lblooksin pas v dreI t stresses, the

i "se 'I :claim 91S new "and i3 l terslaten't isf;-

1. In e tionwith ed" of -ithe draft ge clined hiet-ion `opposingmovemento having at one en j feces and o. @lined friction f responding'iietirm item.-

grally connecting the side Walls and provided with oppositely inclinedfriction faces.

4. vIn a friction. draft gear, tlie combination with a draft spring,oppositcly facingl plunger Wedges having oppositcly inclined frictionfaces, a member having oppositnly inclined friction faces and movableagainst thc resistance of the draft spring, a yoke having; n, transverseWall provided with in clined friction faces, and Wedge blocks. hav ing;ropponitely inclined friction. facetsl for eri-- gagging the frictionfaces of the plunger wertiges, said member, and the yoke.

5. In a friction draft gear, tlic combina tion with a draft spring,oppositcly facing;l

plunger \ve lgcs`l\ving oppositely inclined .lriction faces, a ncinlierhaving oppositely inclined friction facon' and movable against theresistance of the dra-'ft spring, a yoke lniiv'inr;4 a transvcrnc Wallcontaining an opening for the )aussage of one plunger wedge and providedvwith inclined friction faces, and, wedge blocks having oplziositclyinclined friction facon for engaging thc fric tion faces of the yoke,tlic plunger Wedges, and said member. I i

In testimony wl'iereof vlV have hcreunto set my iinnd E'lQVi/YARD NEWELL

